Preamp choices:Short list

Hello,
I am not familiar with BAT. I am demoing the Rouge RP7 and RP9. They are incredible. Plus, there are options for balanced and unbalanced for inputs and outputs. It has extra outputs for subs, full remote control and a home theater pass through. Crazy good options. Also going to look into the Rouge Dragon amplifier. If you are looking for a deal on Rouge RP7 or RP9 look into https://holmaudio.com/rogue-audio/
Call and ask for Mike about price ;)

+1 ncdogdoc on the Atmosphere, though Ive never had the privilege of hearing any of their kit

AND it's 'merican made

If you are set on a brand like BAT go for it, I am not personally familiar with their sound although I have read the equipment is very good.
I am familiar with atmasphere balanced amps and preamp and you won't go wrong with an MP-1 or MP-3 preamps, very light, I have owned both and both are outstanding.

The Coda 07X would be a fine option. I have also heard the Ps Audio BHK. Quite nice indeed. If on a budget, the Schiit Freya+ is very tough to beat indeed. It is flexible, versatile and affordable. 

Jimbones I don't know why you think tubes are a problem, I have a tube preamp that is point to point wired and I've left it on for nearly two years except during thunderstorms.